Comparison Porsche 911 Targa (991 II) 4 GTS 3.0 (450 Hp) PDK & Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Long Box 6.0 V8 (301 Hp) Automatic CNG
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| Brand: | Porsche | Chevrolet |
| Model: | 911 | Silverado 3500 HD |
| Generation: | 911 Targa (991 II) | Silverado 3500 HD III (K2XX) Crew Cab Long Box |
| Engine / modification: | 4 GTS 3.0 (450 Hp) PDK | 6.0 V8 (301 Hp) Automatic CNG |
| Production start: | 2017 year | 2015 year |
| Production end: | 2020 year | 2016 year |
| Coupe type: | Targa | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2+2 | 5 |
| Fuel consumption / economy - urban: | 11.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.3 l/100 km | |
| Fuel consumption / economy - combined: | 8.7 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol / CNG |
| Drag coefficient: | 0.32 | |
| Fuel tank volume: | 67 l | 136 l |
| Emission standard: | Euro 6 | |
| CO2 emissions: | 196 g/km | |
| Power: | 450 hp | 301 hp |
| Max power in: | 6500 rpm. | 5000 rpm. |
| Maximum speed: | 306 km/h | |
| Acceleration from 0 to 100 km/h: | 3.7 sec | |
| Acceleration from 0 to 200 km/h: | 13.2 sec | |
| Torque: | 550 Nm @ 2150-5000 rpm. | 452 Nm @ 4200 rpm. |
| Model Engine: | MDC.JA | Vortec LC8 |
| Engine position: | Rear, longitudinal | |
| Engine displacement: | 2981 cm3 | 5967 cm3 |
| Engine oil capacity: | 8 l | 5.7 l |
| Coolant: | 15.5 l | |
| Fuel System: | Direct injection | |
| Maximum engine speed: | 7500 rpm. | 6000 rpm. |
| CNG cylinder capacity: | 67 kg | |
| Aspiration / Turbine: | BiTurbo | Naturally aspirated engine |
| Position of cylinders: | Boxer | |
| Valvetrain: | OHV, VVT | |
| Number of cylinders: | 6 | 8 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10 | 9.6 |
| Piston Stroke: | 76.4 mm | 92 mm |
| Cylinder Bore: | 91 mm | 101.6 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive |
| Number of Gears (automatic transmission): | 7 PDK | |
| Length: | 4528 mm | 6563 mm |
| Width: | 1852 mm | |
| Width including mirrors: | 1978 mm | 2045 mm |
| Height: | 1291 mm | 1979 mm |
| Wheelbase: | 2450 mm | 4259 mm |
| Front track: | 1539 mm | 1748 mm |
| Rear (Back) track: | 1544 mm | 1709 mm |
| Ride height(clearance): | 214 mm | |
| Maximum amount of Luggage (trunk): | 285 l | |
| Front suspension: | Independent type McPherson | Independent torsion bar, double wishbone |
| Rear suspension: | Multi-link independent | |
| Max weight: | 2040 kg | |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1605 kg | |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.1 m | 17.1 m |
| Permitted trailer load with brakes (12%): | 4037 kg | |
| Tire size: | 245/35 ZR 20; 305/30 ZR 20 | 235/80 R17; 265/70 R18 |
| Wheel rims size: | 9J x 20; 12J x 20 | 7.5J x 17; 8J x 18 |